848 
medulla of the circonvolution lies uncovered. The line of Gennari ends on both 
sides sharply against the defect, is not atrophied, even mightier than usual and 
formed by thicker fibres; secondly in B, where ventrally from the f. pariéto-occipitalis 
the medulla of the cuneus lies uncovered and in C. where the defect begins in 
the gyrus fusiformis. 
In the white matter opposite the fissura calcarina a triangular degenerated field 
is to be seen. Jt is situated for the greater part ventrally, but also a bit laterally 
round the sectioned distal end of the strata sagittalia 
In figure 15 (pointed out by line 15 of fig. 11 and comparable to fig. 8 of ther 
first observation, the defect is found distally from the confluence of the fiss. cal- 
carina "and f. pariéto occipitalis. All the basal convolutions are missing. 
Cuneus, lingualis, fusiformis, as well as the medial border of the ventricle are 
entirely gone. The medial medullary cone of the g. occipito-temporalis lies unco- . 
vered. The degenerated field is larger, lies partly in the ventral, partly already in 
the latero-dorsal division of the stratum sagittale internum, but also in the stratum 
sagittale externum, especially there where the ventral division of it passes into 
the lateral. For the rest the stratum sagiltale externum is seen quite distinctly 
here (in fig. 8 totally gone), a proof that this area consists of more fibres than 
the geniculo-cortical radiation only (all gone in fig. 8). 
In fig. 14 (pointed out by line 14 of fig. 11 and comparable to fig. 7) the 
splenium corporis callosi is sectioned. 
Except a rest of the Cornu Ammonis no convolutions are to be found ventrally 
from the cornu inferius. The greater part of the gyrus occipito-temporalis is gone. 
The intact ventral strata sagittalia, as were found in fig. 7 are missing. The dege- 
nerated field (due to the defect) lies laterally and dorsally from the ventricle in 
both the strata sagittalia. 
A great part of the dorsal stratum sagittale externum is intact. In fig. 7 exactly 
this large layer was tolally destroyed and therefore also the geniculo-cortical radia- 
tion to the occipital lobe. 
In fig. 13 (pointed out by the lines 13 of fig. 11, comparable to fig. 6) the 
retro-lenticular area is sectioned !). 
As if this section were the negative of that reproduced in fig. 6, one hardly 
finds here normal fibres in fields, which were there the best preserved In the 
ventral part of the geniculo-cortical radiation and of the area of WERNICKE all the 
fibres are gone. The ventral and lateral part of the proper capsule of the lateral 
geniculate body scarcely consist of normal fibres, the striae medullares in the 
cauda are gone, and the body is reduced to half its normal size, 
On the other hand the dorsal part of the geniculo cortical radiation and the 
area of WERNICKE, the dorso-medial proper capsule and the striae medullares 
in the caput of the geniculate body are only relatively changed !). 
The same reverse is shown in the cell-preparations of the body itself. Latero- 
ventral, in the cauda of the body not one cell is to be found. 
Thick layers of neuroglia, where once the cells were alternate with less thick 
Jayers of neuroglia (now representing the striae), bnt all celis, the dorsal as well 
as the ventral, have disappeared. On the othershand, the dorso-medial part, the 
caput of this ganglion contains well ranged cell-layers, small dorsal ones as 
1) Here, as well as before, purposely { do not point out several other degene- 
rations. To make things still less complicated I do not even mention the influence 
upon the pulvinar of both these foci. 
